Write JS code as if it was synchronous

ES7 introduced async and await which are great. While working with them I've found that await is usually superfluous. This babel plugin automatically puts await in front of every function call in async functions. In the result the code looks like if JS was synchronous.

Example

const axios = require('axios')

async function loadAndParseData () {
  // Because this function is marked as async we
  // automatically await all promises

  const url = 'https://api.github.com/users/ziolko'
  const { data: user } = axios.get(url)
  const { data: repos } = axios.get(user.repos_url)

  // This function is not async, so it's not touched
  function getRepoName(repo) {
    return repo.nam
  }

  return repos.map(getRepoName)
}

loadAndParseData().then(console.log)

Use cases

This plugin was valuable for me in integration tests and nodejs utility scripts. See examples for working code.

Installation

npm install --save-dev babel-plugin-auto-await

Usage

Via .babelrc (Recommended)

.babelrc

{
  "plugins": ["auto-await"]
}

Via CLI

babel-node --plugins auto-await script.js

Via Node API

require("babel-core").transform("code", {
  plugins: ["auto-await"]
});

Gotchas

If you don't understand how Promise, async and await work read this tutorial first.

License

https://opensource.org/licenses/MIT